source: EDIS/tags/ed/tracking-ui-core/src/main/flex/gov/va/med/edp/view/LoadingDialog.mxml@ 1240

<?xml version="1.0" encoding="utf-8"?>
<mx:TitleWindow xmlns:mx="http://www.adobe.com/2006/mxml" xmlns:widget="gov.va.med.edp.widget.*"
                title="Please Wait..."
                minWidth="600" minHeight="100" showCloseButton="false" horizontalAlign="right" verticalAlign="top" layout="vertical"
                paddingTop="10" paddingLeft="10" paddingRight="10">
    <mx:Script>
                <![CDATA[
                        import mx.core.Application;
                        import mx.managers.PopUpManager;

        private static var dialog:LoadingDialog;

        public static function show() : void {
            if (dialog != null) return;
            dialog = LoadingDialog(PopUpManager.createPopUp(Application.application as DisplayObject, LoadingDialog, true));
            PopUpManager.centerPopUp(dialog);
        }

        public static function hide() : void {
            if (dialog == null) return;
            PopUpManager.removePopUp(dialog);
            dialog = null;
        }


                ]]>
    </mx:Script>
    <mx:VBox id="content" height="90%" width="100%">
        <mx:HBox width="100%" verticalAlign="middle">
            <mx:Image source="@Embed('loading_icon.gif')" width="32" height="32"/>
            <mx:Text fontSize="18" width="100%"
                     text="Loading..." textAlign="center"/>
        </mx:HBox>
     </mx:VBox>
     <!--mx:HBox width="100%" height="10%" horizontalAlign="center">
                <mx:Button label="Close" click="hide()" horizontalCenter="0"/>
     </mx:HBox-->
</mx:TitleWindow>